A more thorough explanation:

Term: in pectore judicis
Definition: This Latin phrase means that a decision has been made by a court, but it has not been announced yet. It is kept secret in the court's breast, or innermost thoughts.
Example: In a court case, the judge may make a decision in pectore judicis if they need more time to consider the evidence or if they want to keep the decision private until a later time. This means that the decision has been made, but it has not been announced to the parties involved or the public. The decision is kept secret in the judge's breast until it is announced.